Strict warning: Only variables should be passed by reference in mailchimp_sts_admin_page()

With 7.x-2.0 I'm getting the following error when I go to admin/config/services/mailchimp/sts:
Strict warning: Only variables should be passed by reference in mailchimp_sts_admin_page() (line 33 of mailchimp_sts.admin.inc
The line in question is:

    $form = drupal_render(drupal_get_form('mailchimp_sts_admin_settings', $emails));